Seems like good way to destroy any good will anyone has for your engine... So now that both Godot and Unity are dead, what is next?
In any case, they learned the lesson, no one from management responsible for the runtime fee is still at the company, and the runtime fee has been dropped.
Alternatively you have Unreal, LibGDX, MonoGame, FNA, Stride, Murder,..... up to do your own engine.